Stud bolt puller and inserter

ABSTRACT

This stud bolt puller can be readily secured to the threaded portion of a stud bolt and upon turning one of its parts relative to the other part lift stud bolt from a stud block and out of the top surface thereof. The central member has a threaded bore for receiving the threaded portion of the stud bolt. The central spindle member has a square head for receiving a wrench and the other member is of hexagonal outer section for similarly receiving a wrench. The threads of the inner and outer member extend the full extent thereof so that the inner member can be worked through the outer member. With the stud inserted into the central member the puller can be struck with a hammer upon the head portion of the central member to force the full portion of a stud bolt into a undersized hole in the stud block.

United States Patent 1 Buckwalter 51 Apr. 17, 1973 I 1 STUD BOLT PULLERAND INSERTER Sanford L. Buckwalter, 406 Shelton Beach Road, Mobile, Ala.36613 [22] Filed: Nov. 26, 1971 [21] Appl. No.: 202,139

[76] lnvcntor:

Primary Examinerl-larold D. Whitehead Assistant ExaminerJ. C. PetersAttorneyl ,a.forest S. Saulsbury et al.

[57 1 ABSTRACT This stud bolt puller can be readily secured to thethreaded portion of a stud bolt and upon turning one of its partsrelative to the other part lift stud bolt from a stud block and out ofthe top surface thereof. The central member has a threaded bore forreceiving the threaded portion of the stud bolt. The central spindlemember has a square head for receiving a wrench and the other member isof hexagonal outer section for similarly receiving a wrench. The threadsof the inner and outer member extend the full extent thereof so that theinner member can be worked through the outer member. With the studinserted into the central member the puller can be struck with a hammerupon the head portion of the central member to force the full portion ofa stud bolt into a undersized hole in the stud block.

4 Claims, 4 Drawing Figures PATENIEl] APR 1 7 I973 INVENTOR.

SANFORD L. BUCKWALTER ATTORNEY.

STUD BOLT FULLER AND INSERTER This invention relates to stud bolt pullerand inserters.

It is an object of the present invention to provide a simple andeffective device for pulling of stud bolts from a stud block in whichthe engagement with the threaded portions of the stud bolt can be easilyeffected and wherein by a turning movement of one of the two members,the stud bolt can be lifted from the stud block by the reaction of thebottom end of one of the members with the top surface of the block.

It is another object of the invention to provide stud puller comprisinga central spindle member and an outer sleeve member threadedly engagedwith one another for complete axial movement of one member within theother wherein both members are provided with a wrench engaging surfaceto which a wrench can be applied to either one of the members foreffecting the removal of the stud.

It is still another object of the invention to provide a stud pullerwhich may also serve for the engaging of the stud within the stud blockwherein the stud puller is so embedded or inserted within the centralspindle member that hammer action upon the same will not disturb thethreads but with this action be made fully upon the upper end of thestud.

Other objects of the invention are to provide a stud 1 puller andinserter having the above objects in mind which is of simpleconstruction, has a minimum numer of parts, of pleasing appearance,adapted to be easily inserted upon the stud bolt, adapted to be easilyremoved from the stud bolt, durable, effective and efficient inoperation.

For a better understanding of the invention, reference may be had to thefollowing detailed description taken in connection with the accompanyingdrawing, in which:

FIG. 1 is a vertical elevational view of the stud bolt puller embodyingthe features of the present invention with portions broken away to showthe interior construction and with the block into which the stud bolt issunk being in section, both parts of the puller having their ends lyingflush on the surface of the stud block.

FIG. 2 is a vertical elevational view of the stud puller with the innerthreaded member lifted out of the outer member with the stud, thepulling operation having been finally effected.

FIG. 3 is an elevational view of the puller with the inner and outerthreaded parts supporting the stud bolts preparatory to insertion by adriving action into a stud block, portions being broken away to show theinterior construction of the puller and the hole in the block.

FIG. 4 is a further elevational view of the stud puller with the outermember having its ends lying flush on the block and with the innermember being worked to effect the backing off and pulling of thestudfrom the stud block, portions of the stud puller being broken away toshow the interior construction thereof.

Referring now to the figures, generally indicates the stud bolt pullerof the present invention. This puller comprises generally an elongatedouter sleeve member 11 which is internally threaded its full height, thethreads being indicated at 12. The exterior of the outer member 11 is ofhexagonal cross section and adapted to accommodate a wrench head.

Workable within the outer hexagonal member and along the threads 12 is acentral substantially equal height central member 13 having externalthreads 14 for substantially its full height and a squared top extension15 for receiving a wrench open or box type. By turning the centralmember 13 one way or the other the same can be adjusted eitherdownwardly or upwardly. The lower end of the central member has anupwardly extending threaded bore 16 adapted to accommodate threaded end17 of a stud bolt 18 sunk into a smooth hole 19 to the extent of itssmooth surface and in a block 21 adapted to accommodate such stud bolts.

In order to effect the insertion of the stud bolt 18 into the hole 19 ofthe block 21, the stud bolt is by its threaded portion 17 threaded intothe bore 16 of the central member 13 and the parts 11 and 13 arrangedgenerally as shown in FIG. 3 and upon the stud bolt being aligned withthe opening 19 in the block 21 and by applying a hammer pressure asindicated by the arrow in FIG. 3 to the top of the assemblage the studbolt will be driven into the block 21 in a tight fitting manner, thetolerances between the diameter of the stud bolt 18 and the diameter ofthe hole being such as to insure a tight gripping action, the diameterof the hole preferably being slightly less than the diameter of the studbolt 18. Prior to the filing of the driving action the outer member canbe backed off so that its lower end face is flush with the end face ofthe central member at the lower end thereof an as shown in FIG. 1. Thestud bolt is made home as shown in FIG. 1 to the full depth within theopening 19 and upwardly to the threaded portion 17 of the stud bolt thelower end of which will lie flush with the top surface 22 of the block21.

If the outer member 11 is turned as illustrated by the arrow in FIG. 1while the central member 13 is held by a wrench engaging with thesquared top extension 15, the stud bolt will as illustrated in FIG. 2 bebacked off since the central threaded member will with the stud bolt belifted as shown in FIG. 2. By continuing this action the lower end ofthe stud bolt will be made to clear the opening 19 and the surface 22 ofthe block 21. The engagement will have been made with the stud bolt 18by first aligning the central threaded member 13 fully within the outermember 11 as shown in FIG. 1. Turning the unit in the direction of thearrow to thread the threaded bore 16 onto the threaded portion 17 of thestud bolt. A continuous movement of the outer member 11 in the directionof the arrow as shown in FIG. 1 and without holding the central member13 will effect the lifting action as seen in FIG. 2.

The stud bolt puller can also be worked by holding the outer member andturning the central member as shown in FIG. 4. The central member willaccordingly be lifted due to the upward threading action thereof withinthe outer member 11 so that the pulling of the stud bolt 18 isaccordingly effected.

When the threaded portion of the stud bolt as indicated at 17 has beentaken up by the bore threads 16 as shown in FIG. 1 the continuousturning of the outer member downwardly over the threads of the centralmember 13 will cause the lifting action and since the outer membercannot extend it downwardly into the surface 22 of the block, it mustnecessarily cause the central member to climb upwardly taking with it asshown in FIG. 2 the stud bolt 18. The threaded portion of the stud boltcan be of any length and the threading of the bore 16 of the centralmember 13 will automatically come to a stop at the end of the threadedportion by the smooth portion of the stud bolt 18. All of the threadedportions can be either right handed or left handed.-

It should be apparent that a backing off action is effected by holdingone of the members while turning the other, either by turning the outermember without holding the central member or by turning the centralmember as illustrated in FIG. 4 while holding the outer member 1 1.

It should be apparent that an easy and quick method is afforded by thepresent puller to remove studs from a stud block. This puller toolsimplifies the usual procedure for the removing of stud bolts and cutsthe time for the removal of the stud bolts over the regular 7 methods.

Since stud bolts are approximately three thousandth of an inch over sizein diameter for the stud hole in the block it makes pulling of the studdifficult with tools employing rocker arms and the like.

This puller tool can be used with a power wrench as well as with a hardwrench.

The square head of the central or spindle member 13 can be used forscrewing the puller tool onto the threaded portion of the stud. Theouter member 11 is then screwed onto the central spindle or stud toeffect the lifting as described.

Once the stud has been inserted as shown in FIG. 2 by a driving action,the puller tool can be removed from the stud by turning the square head15 of the central spindle 13. There should not be any damage of thethreads on the stud if the stud is well threaded into the central boreof the central member or spindle 13 as shown in FIG. 3. The drivingaction would then be made upon the end of the stud bolt threads andwithout the transfer of the thrust through the threads. This puller tooltakes up little space and should be readily available and handy forpulling the studs. The puller can be applied to the studs very easilyeither for the purpose of effecting the insertion of the stud or thepulling of the stud.

While various detailed changes may be made in the construction, it shallbe understood that such changes will be within the spirit and scope ofthe present invention as defined by the appended claims.

What l claim is: v

l. A stud bolt puller comprising a central spindle member externallythreaded and having an internally threaded bottom bore adapted toaccommodate the threaded portion of the stud bolt upon the centralspinsaid central spindle member being fully threaded externally andthreaded within the stud be t engaging bore,

said outer member being fully threaded throughout its full height, allof the threads of the spindle and outer members being of the same hand.

2. Astud bolt puller as defined in claim 1, and said central spindlemember having a square head adapted to receive a wrench tool for turningthe central spindle relative to the outer member.

3. A stud bolt puller as defined in claim 1, and said outer member beingof hexagonal external section adapted to be engaged by a wrench.

4. A stud bolt puller as defined in claim 3, and said central memberhaving a wrench engageable head at its upper end adapted to extend abovethe upper end of the outer member on the memberbeing brought flush intoengagement with the surface of the stud block.

1. A stud bolt puller comprising a central spindle member externallythreaded and having an internally threaded bottom bore adapted toaccommodate the threaded portion of the stud bolt upon the centralspindle member being threaded thereover, an outer sleeve member threadedonto the central spindle member, the sleeve member having threadsextending the full height of the same and being essentially of the samelength as the internal threaded spindle member, said spindle and outermembers having bottom end surfaces engageable with top surfaces of thestud block upon the puller being threaded home over the threaded portionof the stud against which surface the lower end of the outer member mayreact when one of the members are turned to effect the backing off ofthe stud bolt, and said central spindle member being fully threadedexternally and threaded within the stud bolt engaging bore, said outermember being fully threaded throughout its full height, all of thethreads of the spindle and outer members being of the same hand.
 2. Astud bolt puller as defined in claim 1, and said central spindle memberhaving a square head adapted to receive a wrench tool for turning thecentral spindle relative to the outer member.
 3. A stud bolt puller asdefined in claim 1, and said outer member being of hexagonal externalsection adapted to be engaged by a wrench.
 4. A stud bolt puller asdefined in claim 3, and said central member having a wrench engageablehead at its upper end adapted to extend above the upper end of the outermember on the member being brought flush into engagement with thesurface of the stud block.